Answer:
The combined standard deviation is 1.58114.
Step-by-step explanation:
The formula to compute the combined standard deviations of two different data sets is:
Here is the combined mean given by:
It is provided that the sample size is same for both the data sets, i.e.
Compute the combined mean as follows:
Compute the combined standard deviation as follows:
Thus, the combined standard deviation is 1.58114.
Answer: -44.4°F
17,750-8500=9,250
9250/1000=9.25
9.25x-4.8=-44.4
the answer is 240
6x10=60
60x8=480
480÷2=240